LT-4 "Hot-Cam" For an LT-1 car is an emmisions legal cam :
Quote:
24502586 Hydraulic Roller (LT4 Hot Cam)
This hydraulic roller cam is for service only for all V8 engines with roller camshafts. The duration at lash point in degrees (intake/exhaust) is 279/287; duration at .050" tappet lift (intake/exhaust) is 218/228; and maximum lift with 1.6 rocker ratio (intake/exhaust) is 525/525. Valve lash is zero/zero and lobe centerline is 112 degrees.
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And some Comp Cam's that go anything over 279 Duration become non "street legal" Or "Not for Highway Use"
Can someone just exlane how this cams work, and how it would benefit a "bolt-on" stock internal engine?